.container {
  width: 800px;
  overflow: hidden;
  margin: 20px auto;
  border: 1px solid #ccc;
  border-radius: 5px;
  .header {
    width: 100%;
    height: 35px;
    text-align: center;
    line-height: 35px;
    background-color: springgreen;
  }
  .aside {
    width: 100%;
    height: 450px;
    display: flex;
    justify-content: space-around;
    .aside-left {
      width: 130px;
      height: 450px;
      background-color: lightblue;
      text-align: center;
    }
    .aside-main {
      width: 670px;
      height: 450px;
      background-color: lightgreen;
      text-align: center;
    }
  }
}